A processing device for molding recycled plastics and a transfer die assembly

Abstract

The present invention relates to the technical field of plastic recycling and treatment, and specifically, to a processing device and a transfer die assembly for forming recycled plastics. The device includes a workbench, on the surface of which a transfer die structure is fixedly connected. A heating structure is arranged on the side of the transfer die structure and is fixedly connected to the surface of the workbench. Inside the transfer die structure, a plastic forming device and two heat dissipation structures are respectively arranged. The two heat dissipation structures are arranged at the front and rear ends of the plastic forming device. When the plastic forming device moves away outward, it drives the two heat dissipation structures to gather inward, so that the heat dissipation structures blow air to cool the plastic after extrusion and forming by the plastic forming device obliquely. Moreover, when the two heat dissipation structures gather inward, a closed space can also be formed between the plastic forming device and the heat dissipation structures, thereby improving the heat dissipation effect of the heat dissipation structures on the plastic after extrusion and forming by the plastic forming device, enabling the plastic just extruded by the plastic forming device to be blown and cooled in the first time, and reducing the skew phenomenon that occurs just after extrusion and forming.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic recycling and treatment, and specifically, to a processing device and a transfer die assembly for shaping recycled plastics. Background Art

[0002] Plastic is a material with high molecular weight synthetic resin as an important component, which can be molded into a certain shape under certain conditions and can maintain the shape unchanged at room temperature. It has been widely used in various fields of industry, agriculture, national defense, and the national economy;

[0003] With the rapid development of the plastic industry, plastic products are more and more widely used in daily life and industrial production. However, a large amount of plastic waste is also generated, causing serious pollution to the environment.

[0004] Recycling plastics and reprocessing them into useful products can not only reduce environmental pollution but also realize the recycling of resources. In current plastic recycling and shaping equipment, the steps include heating and dissolving the recycled plastics, pouring them into a mold, extrusion molding, and cooling, etc.

[0005] Currently, when extruding and molding the dissolved recycled plastics, there are the following disadvantages:

[0006] Among them, during the existing plastic extrusion molding process, a large amount of high temperature is generated in the mold. When the mold works at a high temperature for a long time, the hardness, strength, and wear resistance of the mold decrease, and it is easier for the surface of the mold to appear worn, scratched, or even cracked, shortening the service life of the mold; and, during the existing air blowing and cooling of the plastics after extrusion molding, the plastics after extrusion molding cannot be quickly blown and cooled in the first time. If the plastics after extrusion molding are not blown and cooled in time, the plastics after extrusion molding will be skewed or the dimensions will change, etc., resulting in the plastics after extrusion molding being unable to be used normally, thus affecting the processing or use of the molded plastics. In view of this, we propose a processing device and a transfer die assembly for shaping recycled plastics. Summary of the Invention

[0007] The purpose of the present invention is to provide a processing device and a transfer die assembly for shaping recycled plastics to solve the problems raised in the above background art.

[0008] To achieve the above purpose, the present invention provides a processing device for shaping recycled plastics, including a workbench, a transfer die structure is fixedly connected to the surface of the workbench, a heating structure is arranged on the side of the transfer die structure, the heating structure is fixedly connected to the surface of the workbench, a plastic shaping device and two heat dissipation structures are respectively arranged inside the transfer die structure, and the two heat dissipation structures are arranged at the front and rear ends of the plastic shaping device;

[0009] During plastic molding, it is squeezed and formed by gathering inward through the plastic molding equipment. At the same time, it drives the two heat dissipation structures to expand towards the die turning structure to blow air and dissipate heat on the side of the plastic molding equipment. Meanwhile, the heat dissipation structure can limit and stabilize the plastic molding equipment.

[0010] After plastic molding, when moving away from the plastic molding equipment, it drives the two heat dissipation structures to gather inward to blow air and dissipate heat on the molded plastic. Meanwhile, the heat dissipation structure is sealed and cooled.

[0011] Preferably, the die turning structure at least includes a box body, the box body is fixedly connected to the surface of the workbench, the inside of the box body is through - set, a driving structure is arranged at the bottom of the workbench, the driving structure is divided into a motor and a belt drive, a second bevel gear is rotatably connected through the bottom of the workbench, a first bevel gear is meshed on the surface of the second bevel gear, and the first bevel gear is spline - connected to the plastic molding equipment.

[0012] Preferably, the heating structure includes a storage tank, the storage tank is fixedly connected to the surface of the workbench, a diversion pipe is fixedly connected through the bottom of the storage tank, a heating element is arranged on the outer ring surface of the diversion pipe, and the staff puts the plastic into the inside of the storage tank.

[0013] Preferably, the plastic molding equipment at least includes a first cylinder, the first cylinder is fixedly connected to the outer ring surface of the box body, the output end of the first cylinder is fixedly connected to a first output shaft, the first output shaft penetrates and is rotatably connected inside the box body, the end of the first output shaft away from the first cylinder is fixedly connected to a right mold, the inside of the right mold is through - set, a hose is fixedly connected through the side of the right mold, and the end of the hose away from the right mold is fixedly connected to the box body through - wise.

[0014] Preferably, the plastic molding equipment at least includes a second cylinder, the second cylinder is fixedly connected to the outer ring surface of the box body, the output end of the second cylinder is fixedly connected to a second output shaft, the end of the second output shaft away from the second cylinder is fixedly connected to a left mold, and the outer ring surface of the second output shaft is spline - connected to the first bevel gear.

[0015] Preferably, the heat dissipation structure at least includes two limiting shafts, the two limiting shafts are rotatably connected to the surface of the workbench, two telescopic plates are respectively fixedly connected to the outer ring surfaces of the two limiting shafts, a plurality of fans are arranged inside the two telescopic plates, two pin shafts are rotatably connected to the sides of the two telescopic plates away from the limiting shafts respectively, and two swing plates are fixedly connected to the tops of the two limiting shafts.

[0016] Preferably, when the right mold and the left mold are in the state of converging inward, the two telescopic plates are in a parallel state, and when the right mold and the left mold are in the state of moving away from each other, the two telescopic plates are in a V-shaped state.

[0017] Preferably, there are two first bevel gears and second bevel gears symmetrically arranged along the horizontal center of the box body, and the two second bevel gears are respectively splined to the outer ring surfaces of the first output shaft and the second output shaft.

[0018] A turning mold assembly includes a turning mold structure, and the turning mold structure is applied to the processing equipment for forming recycled plastics.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. In the processing equipment and the turning mold assembly for forming recycled plastics, when the plastic forming equipment converges inward to extrude plastics into a mold, it can drive the two heat dissipation structures to swing outward, so that the heat dissipation structures blow air to dissipate heat from the outside of the mold. After the heat dissipation structures swing outward, they can fit with the turning mold structure, making the heat dissipation structures more stable when blowing air to dissipate heat, and also being able to limit the jitter phenomenon of the plastic forming equipment, thereby improving the stability of the recycled plastic forming equipment during plastic recycling and extrusion molding, and reducing the working time of the mold at a high temperature state.

[0021] 2. In the processing equipment and the turning mold assembly for forming recycled plastics, when the recycled plastic forming equipment moves away from each other, it drives the two heat dissipation structures to converge inward, so that the heat dissipation structures blow air to dissipate heat from the plastics after extrusion molding by the plastic forming equipment obliquely. When the two heat dissipation structures converge inward, a closed space can be formed between the plastic forming equipment and the heat dissipation structures, thereby improving the heat dissipation effect of the heat dissipation structures on the plastics after extrusion molding by the recycled plastic forming equipment, enabling the plastics just extruded by the recycled plastic forming equipment to be blown and cooled immediately, and reducing the skew phenomenon that occurs just after extrusion molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is a top perspective view of the overall structure of the present invention;

[0024] Figure 3 is a partial schematic diagram of the turning mold structure of the present invention;

[0025] Figure 4 is a partial schematic diagram of the heating structure of the present invention;

[0026] Figure 5 is a schematic diagram of the plastic forming equipment and the heat dissipation structure of the present invention;

[0027] Figure 6 Partial schematic diagram of the heat dissipation structure of the present invention;

[0028] Figure 7 Schematic diagram of the separation of the heat dissipation structure and the mold turning structure of the present invention;

[0029] Figure 8 Schematic diagram of the separated heat dissipation structure of the present invention;

[0030] Figure 9 Two-dimensional schematic diagram of the motion state of the overall structure of the present invention;

[0031] Figure 10 Schematic diagram of the overall structure of the present invention after the motion state;

[0032] Figure 11 Two-dimensional schematic diagram of the overall structure of the present invention after the motion state.

[0033] The meanings of each label in the figure are as follows:

[0034] 1. Workbench; 2. Mold turning structure; 21. Box body; 22. Driving structure; 23. First bevel gear; 24. Second bevel gear; 3. Heating structure; 31. Material storage tank; 32. Heating element; 33. Diversion pipe; 4. Plastic molding equipment; 41. First cylinder; 42. First output shaft; 43. Right mold; 44. Second output shaft; 45. Left mold; 46. Hose; 47. Second cylinder; 5. Heat dissipation structure; 51. Limit shaft; 52. Telescopic plate; 53. Fan; 54. Pin shaft; 55. Swing plate. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] The plastic extrusion molding equipment extrudes the melted plastic into a molded shape and reduces waste of resources. However, in the existing plastic extrusion molding process, the mold is prone to working at a high temperature for a long time. When the high-temperature plastic melt enters the mold cavity, it will come into direct contact with the mold wall, and heat will quickly transfer from the melt to the mold, causing the mold temperature to rise, resulting in mold deformation and shortening the service life of the mold. Therefore, the present invention provides a processing equipment and a mold rotating assembly for molding recycled plastics, including a workbench 1, a mold rotating structure 2 fixedly connected to the surface of the workbench 1, a heating structure 3 arranged on the side of the mold rotating structure 2, and the heating structure 3 is fixedly connected to the surface of the workbench 1. Inside the mold rotating structure 2, a plastic molding device 4 and two heat dissipation structures 5 are respectively arranged, and the two heat dissipation structures 5 are arranged at the front and rear ends of the plastic molding device 4.

[0037] During plastic molding, the plastic is extruded and molded by the plastic molding device 4 by inward gathering, and at the same time, two heat dissipation structures 5 are driven to expand towards the mold rotating structure 2 to blow air and dissipate heat from the side of the plastic molding device 4. At the same time, the heat dissipation structures 5 can limit and stabilize the plastic molding device 4.

[0038] After plastic molding, when the plastic molding device 4 moves away outward, two heat dissipation structures 5 are driven to gather inward to blow air and dissipate heat from the molded plastic, and at the same time, the heat dissipation structures 5 are sealed and cooled.

[0039] The present invention considers that during the existing plastic extrusion molding process, a large amount of heat is generated in the mold. When the mold works at a high temperature for a long time, the hardness, strength and wear resistance of the mold are reduced, and the surface of the mold is more likely to have wear, scratches or even cracks, shortening the service life of the mold. Therefore, when the plastic is extruded and molded by the plastic molding device 4 by inward gathering, two heat dissipation structures 5 can be driven to swing outward, so that the heat dissipation structures 5 blow air and dissipate heat from the outside of the mold. After the heat dissipation structures 5 swing outward, they can fit with the mold rotating structure 2, making the heat dissipation structures 5 more stable when blowing air and dissipating heat, and also limiting the jitter phenomenon of the plastic molding device 4, thereby improving the stability of the plastic molding device 4 during plastic extrusion molding and reducing the working time of the mold at a high temperature.

[0040] Moreover, considering that when the plastic after extrusion molding is cooled by blowing air at present, it is impossible to quickly blow air to cool the extruded plastic in the first time. If the extruded plastic is not cooled by blowing air in time, the extruded plastic will be skewed or its size will change, resulting in the inability to use the extruded plastic normally, thus affecting the processing or use of the formed plastic. Therefore, when moving away from the plastic forming device 4, two heat dissipation structures 5 are driven to gather inward, so that the heat dissipation structures 5 blow and dissipate heat from the plastic after extrusion molding of the plastic forming device 4 obliquely. Moreover, when the two heat dissipation structures 5 gather inward, a closed space can also be formed between the plastic forming device 4 and the heat dissipation structures 5, thereby improving the heat dissipation effect of the heat dissipation structures 5 on the plastic after extrusion molding of the plastic forming device 4, enabling the plastic just extruded by the plastic forming device 4 to be cooled by blowing air in the first time, and reducing the skew phenomenon that occurs just after extrusion molding.

[0041] First of all, to realize die transfer for the mold, because in the continuous production process, in order not to interrupt the production process, it may be necessary to quickly replace the mold. Therefore, through the die transfer operation, it is possible to quickly switch to another set of molds, thereby improving the overall efficiency of the production line. Then, the following specific structures need to be disclosed in detail to realize the die transfer function. Please refer to Figures 2-7 , the die transfer structure 2 at least includes a box body 21, the box body 21 is fixedly connected to the surface of the workbench 1, the inside of the box body 21 is through, a driving structure 22 is arranged at the bottom of the workbench 1, the driving structure 22 is divided into a motor and a belt drive, a second bevel gear 24 is rotatably connected through the bottom of the workbench 1, a first bevel gear 23 is meshed and connected to the surface of the second bevel gear 24, the first bevel gear 23 is spline-connected to the plastic forming device 4. When die transfer of the mold is required, the staff starts the motor, so that the second bevel gear 24 rotates and synchronously drives the first bevel gear 23 to rotate. Then, the rotation of the first bevel gear 23 can drive the plastic forming device 4 to rotate, so that the mold of the plastic forming device 4 rotates, realizing the die transfer function of the mold.

[0042] Moreover, to dissolve the plastic and then divert it into the plastic forming device 4 for subsequent extrusion molding, the following specific structures need to be disclosed in detail. Please refer to Figures 1-4 , the heating structure 3 includes a storage tank 31, the storage tank 31 is fixedly connected to the surface of the workbench 1, a diversion pipe 33 is fixedly connected through the bottom of the storage tank 31, a heating element 32 is arranged on the outer ring surface of the diversion pipe 33. The staff puts the plastic into the storage tank 31, and then the plastic will enter the diversion pipe 33. And by starting the heating element 32 to start heating, the plastic flowing through the diversion pipe 33 is heated and dissolved. The dissolved plastic will be diverted into the box body 21, facilitating subsequent extrusion molding of the dissolved plastic.

[0043] The present invention has the following improvement points:

[0044] To achieve the extrusion molding of the dissolved plastic, since plastic is usually in a solid state at room temperature and is not convenient for extrusion molding, heating can make the plastic more fluid, making it easier to be extruded and molded. This helps improve production efficiency and the quality of the finished product. Then, it is necessary to disclose in detail the plastic molding device 4. Please refer to Figures 5-7 , the plastic molding device 4 at least includes a first cylinder 41. The first cylinder 41 is fixedly connected to the outer ring surface of the box body 21. The output end of the first cylinder 41 is fixedly connected to a first output shaft 42. The first output shaft 42 is rotatably connected through the inside of the box body 21. One end of the first output shaft 42 away from the first cylinder 41 is fixedly connected to a right mold 43. The inside of the right mold 43 is provided with a through hole. A hose 46 is fixedly connected to the side of the right mold 43 in a through manner. One end of the hose 46 away from the right mold 43 is fixedly connected to the box body 21 in a through manner.

[0045] The plastic molding device 4 at least includes a second cylinder 47. The second cylinder 47 is fixedly connected to the outer ring surface of the box body 21. The output end of the second cylinder 47 is fixedly connected to a second output shaft 44. One end of the second output shaft 44 away from the second cylinder 47 is fixedly connected to a left mold 45. The outer ring surface of the second output shaft 44 is spline-connected to the first bevel gear 23. When the dissolved plastic is guided to the inside of the box body 21, the dissolved plastic will continue to flow through the hose 46 into the inside of the right mold 43. Then, by the staff respectively starting the first cylinder 41 and the second cylinder 47, the first output shaft 42 and the left mold 45 move inwardly and gather respectively, and simultaneously drive the right mold 43 and the left mold 45 to move inwardly and gather. And, considering that the hose 46 will lengthen when the right mold 43 moves, so the hose 46 does not affect the hose 46 to guide the dissolved plastic into the inside of the right mold 43 when the right mold 43 moves. Then, after the right mold 43 and the left mold 45 move inwardly and gather, they will fit together (please refer to Figure 10 Figure 11 ), so that the dissolved plastic guided by the hose 46 leaks out from the protruding part of the right mold 43. Then, at the concave position provided on the left mold 45, the right mold 43 and the left mold 45 cooperate with each other to achieve the extrusion molding of the dissolved plastic.

[0046] Next, to achieve that the plastic molding device 4 will generate high temperature during long-term operation. If it works in a high-temperature state for a long time, the service life of the right mold 43 and the left mold 45 will be reduced. As for why the right mold 43 and the left mold 45 are in a high-temperature state, it is because when the dissolved plastic is guided to the right mold 43 and the left mold 45 for extrusion, since the plastic is in a high-temperature state, the temperature will be transferred to the right mold 43 and the left mold 45. Therefore, it is necessary to disclose in detail the following heat dissipation structure 5 to reduce the right mold 43 and the left mold 45 from working in a high-temperature state for a long time. Please refer to Figures 8-11, the heat dissipation structure 5 includes at least two limiting shafts 51. The two limiting shafts 51 are rotatably connected to the surface of the workbench 1. Two telescopic plates 52 are respectively fixedly connected to the outer circumferential surfaces of the two limiting shafts 51. A plurality of fans 53 are arranged inside the two telescopic plates 52. One ends of the two telescopic plates 52 away from the limiting shafts 51 are respectively rotatably connected to two pin shafts 54. Two swing plates 55 are fixedly connected to the tops of the two limiting shafts 51. When the right mold 43 and the left mold 45 move inward to squeeze and form the plastic, the surfaces of the right mold 43 and the left mold 45 will respectively squeeze the outer circumferential surfaces of the two telescopic plates 52, causing the two telescopic plates 52 to drive the two limiting shafts 51 to swing respectively, that is, from a V shape to a parallel state. Then, after the swinging ends, the staff will start the plurality of fans 53, so that the wind blown by the fans 53 will be guided to the outer circumferential surfaces of the right mold 43 and the left mold 45 for heat dissipation, thereby reducing the situation that the right mold 43 and the left mold 45 always work at a high temperature and improving the service life of the right mold 43 and the left mold 45.

[0047] At this time, considering that when the right mold 43 and the left mold 45 move inward to squeeze the plastic, the right mold 43 and the left mold 45 may vibrate. This is because the mold may be worn after long-term use. In particular, the wear of guiding components such as guide columns and guide sleeves will reduce the accuracy and increase the risk of vibration. Therefore, when the two telescopic plates 52 and the limiting shafts 51 swing to the maximum distance, one ends of the two telescopic plates 52 close to the pin shafts 54 will abut against the sides of the right mold 43 and the left mold 45. At the same time, when the limiting shafts 51 rotate, they will drive the two swing plates 55 fixed to the tops to rotate, so that the two swing plates 55 respectively abut against the inner side walls of the box body 21, making the two telescopic plates 52 stable in the parallel state after swinging.

[0048] In the following, in order to disclose the specific state positions of the plastic molding device 4 and the heat dissipation structure 5, facilitate the subsequent understanding of the following working process, and blow air for heat dissipation to the plastic after extrusion molding, therefore, the following specific structures need to be disclosed in detail. Please refer to Figures 8-11 , when the right mold 43 and the left mold 45 move inward to gather, the two telescopic plates 52 are in a parallel state. When the right mold 43 and the left mold 45 move away from each other, the two telescopic plates 52 are in a V shape. After the right mold 43 and the left mold 45 squeeze and form the plastic, and when the right mold 43 and the left mold 45 move away from each other, the two telescopic plates 52 will lose the blocking force, causing the two telescopic plates 52 to swing inward to form a V shape. Then, the wind blown by the fans 53 blows air for heat dissipation to the surfaces of the right mold 43 and the left mold 45 after extrusion molding, and can also blow air to cool the plastic after extrusion molding, preventing the just-extruded plastic from being in a high temperature state, which is not convenient for the staff to take it out and reducing the harm to the staff.

[0049] Moreover, when the two telescopic plates 52 swing into a V shape, the two limiting shafts 51 can also rotate to drive the two swing plates 55 to swing, so that a closed space is formed between the swing plates 55 and the telescopic plates 52 in the V shape (please refer to Figure 2 ) to improve the effect of blowing and cooling the right mold 43 and the left mold 45.

[0050] There are two first bevel gears 23 and second bevel gears 24 symmetrically arranged along the transverse center of the box body 21. The two second bevel gears 24 are respectively splined to the outer ring surfaces of the first output shaft 42 and the second output shaft 44. Here, the working process when the mold needs to be rotated will be described in detail. When the staff needs to rotate the mold, the motor is started by the staff to make the belt drive move, and the two second bevel gears 24 are synchronously driven to rotate. Then, the two second bevel gears 24 rotate to drive the first output shaft 42 and the second output shaft 44 to rotate respectively, so that the right mold 43 fixed to the first output shaft 42 and the left mold 45 fixed to the second output shaft 44 rotate, thereby realizing the rotation of the mold and facilitating the subsequent continuous plastic extrusion molding.

[0051] Working principle: The staff puts the plastic into the internal of the storage box 31, and then the plastic will enter the internal of the diversion pipe 33. Then, by starting the heating element 32 to heat, the plastic flowing in the diversion pipe 33 is heated and dissolved. Then, the dissolved plastic will continue to flow through the hose 46 into the internal of the right mold 43. Then, by the staff starting the first cylinder 41 and the second cylinder 47 respectively, the first output shaft 42 and the left mold 45 move inward and fit together respectively (please refer to Figure 10 Figure 11 ) to realize the extrusion molding of the dissolved plastic.

[0052] When the right mold 43 and the left mold 45 move inward to extrude and mold the plastic, the outer ring surfaces of the two telescopic plates 52 will be respectively extruded by the surfaces of the right mold 43 and the left mold 45, so that the two telescopic plates 52 drive the two limiting shafts 51 to swing respectively, that is, from the V shape to the parallel state. After the swing ends, the staff will start multiple fans 53, so that the wind blown by the fans 53 will flow to the outer ring surfaces of the right mold 43 and the left mold 45 for heat dissipation, thereby reducing the right mold 43 and the left mold 45 from working at a high temperature all the time.

[0053] After the right mold 43 and the left mold 45 extrude and form the plastic, by separately starting the contraction of the first cylinder 41 and the second cylinder 47, the right mold 43 fixed to the first output shaft 42 and the left mold 45 fixed to the second output shaft 44 move away from each other. At this time, the two telescopic plates 52 will lose the blocking force, causing the two telescopic plates 52 to swing inward to form a V shape. Then, the wind blown by the fan 53 blows on the surfaces of the right mold 43 and the left mold 45 that are extruded and formed for heat dissipation. Moreover, when the two telescopic plates 52 swing into a V shape, the two swing plates 55 can also be driven to swing by the rotation of the two limiting shafts 51, so that the swing plates 55 and the telescopic plates 52 in the V shape form a sealed space (please refer to Figure 2 ) to improve the effect of blowing and cooling the right mold 43 and the left mold 45.

[0054] When mold rotation is required, the staff starts the motor to make the belt drive move, and synchronously drives the two second bevel gears 24 to rotate. Then, the two second bevel gears 24 rotate to drive the first output shaft 42 and the second output shaft 44 to rotate respectively, so that the right mold 43 fixed to the first output shaft 42 and the left mold 45 fixed to the second output shaft 44 rotate, thereby realizing mold rotation and facilitating subsequent plastic extrusion and forming.

[0055] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and do not limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A processing device for molding recycled plastics, comprising a workbench (1), characterized in that: The surface of the workbench (1) is fixedly connected to a box (21), a heating structure (3) is arranged on the side of the box (21), the heating structure (3) is fixedly connected to the surface of the workbench (1), and a plastic molding device (4) and two heat dissipation structures (5) are arranged inside the box (21), and the two heat dissipation structures (5) are arranged at the front and rear ends of the plastic molding device (4); When the plastic is being molded, the plastic molding device (4) is gathered inwards and extruded to form the plastic, and at the same time, the two heat dissipation structures (5) are driven to expand to blow air to the sides of the plastic molding device (4) to dissipate heat, and at the same time, the heat dissipation structure (5) can limit and stabilize the plastic molding device (4); After the plastic is formed, when it moves outward through the plastic forming device (4), it simultaneously drives the two heat dissipation structures (5) to gather inward to blow air and dissipate heat from the formed plastic; The heat dissipation structure (5) comprises at least two limit shafts (51), the two limit shafts (51) are rotatably connected to the surface of the workbench (1), the outer ring surfaces of the two limit shafts (51) are respectively fixedly connected to two telescopic plates (52), a plurality of fans (53) are arranged inside the two telescopic plates (52), the two telescopic plates (52) are respectively rotatably connected to two pin shafts (54) on one side away from the limit shaft (51), and the tops of the two limit shafts (51) are fixedly connected to two swing plates (55); The plastic molding device (4) comprises a right mold (43) and a left mold (45), and when the right mold (43) and the left mold (45) are in a state of being away from each other, the two telescopic plates (52) are in a V-shaped state; When the right mold (43) and the left mold (45) are brought together to extrude the plastic, the surfaces of the right mold (43) and the left mold (45) will respectively squeeze the outer annular surfaces of the two telescopic plates (52), so that the two telescopic plates (52) respectively drive the two limit shafts (51) to swing; When the two telescopic plates (52) and the limiting shaft (51) swing to the maximum distance, the ends of the two telescopic plates (52) close to the pin shaft (54) will abut against the side surfaces of the right mold (43) and the left mold (45). At the same time, when the limiting shaft (51) rotates, it will drive the two swinging plates (55) fixed on the top to rotate, so that the two swinging plates (55) respectively abut against the inner side walls of the box body (21).

2. The processing equipment for molding recycled plastics according to claim 1, characterized in that: The heating structure (3) comprises a material storage box (31), the material storage box (31) being fixedly connected to the surface of the workbench (1), a guide tube (33) being fixedly connected through the bottom of the material storage box (31), a heating element (32) being provided on the outer annular surface of the guide tube (33), and plastic is placed into the material storage box (31) by a worker.

3. The processing equipment for molding recycled plastics according to claim 1, characterized in that: The plastic molding device (4) comprises at least a first cylinder (41), the first cylinder (41) being fixedly connected to the outer annular surface of the housing (21), the output end of the first cylinder (41) being fixedly connected to a first output shaft (42), the first output shaft (42) being rotatably connected to the housing (21), the end of the first output shaft (42) away from the first cylinder (41) being fixedly connected to a right mold (43), the interior of the right mold (43) being through-set, the side of the right mold (43) being through-set and fixedly connected to a hose (46), the end of the hose (46) away from the right mold (43) being through-set and fixedly connected to the housing (21).

4. The processing equipment for molding recycled plastics according to claim 3, characterized in that: The plastic molding device (4) comprises at least a second cylinder (47), the second cylinder (47) being fixedly connected to the box body (21), the output end of the second cylinder (47) being fixedly connected to a second output shaft (44), and the end of the second output shaft (44) away from the second cylinder (47) being fixedly connected to a left mold (45).

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